Bench-vise.



No. 804,179. PATENTED NOV. 7, 1905.

W. & S. VANMANEN.

BENCH VISE.

APPLICATION FILED NOV.14, 1904.

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WWW WillI a 771 Van mnnen Step/p an Van mane)? ji www WILLIAM VANMANENAND STEPHEN VANMANEN, OF GRAND RAPIDS, MICHIGAN.

BENCH-VISE.

Specification of Letters Patent.

- Patented Nov. 7, 1905.

Application filed November 14, 1904. Serial No. 282,753.

To all whom, it may concern.-

Be it known that we, WILLIAM VANMANEN and STEPHEN VANMANEN, citizens ofthe United States, residing at Grand Rapids, in the county of Kent andState of Michigan, have invented certain new and useful Improvements inBench-Vises, of which the following is a specification.

Our invention relates to improvements in quick-acting bench-vises andits object is to provide a bench-vise having a mutilated screw withwhich the screw upon the revolving bench-screw will invariably mesh withthe screw-thread in the nut. We attain this object by the mechanismillustrated in the accompanying drawings, in which Figure 1 is a topplan of a bench screw, vise, and their supporting-casting detached fromthe bench. Fig. 2 is an end view of the nut and screw, showing the endsof the mutilated threads. Fig. 3 is a plan of the screw, showing themutilated thread, and Fig. 4 is a bottom plan of the cap of the nut.

Similar letters refer to similar parts throughout the several views.

The nut in this case is made in two parts, the cap A having anarrow lineof anglingco s a, which form a short length of regulafiy arrangedscrew-threads of a proper length to allow the open space 6 in thescrewthreads of the bench-screw B to receive them, so that thebench-screw may be easily slid endwise to quickly adjust the position ofthe jaw D in its relative position with the support G or the edge of thebench, (not here shown,) so that it may be readily adjusted to any widthor size of object to be clamped in the vise.

.It is evident that with a square-threaded screw, as shown, an attemptto turn the bench-screw when in connection with the segment of cogs a inthe cap would invariably result in looking the screw threads so that thebench-screw could not be turned, and to obviate this difficulty we haveplaced the nut A A in a yoke or support G in a manner that it may bemade to revolve a short distance with the bench-screw and at the sametime will be carried forward by reason of the incline a traveling uponthe incline G on the support until the nut is carried to a point wherethe screw-threads in the nut and on the bench-screw will exactly mesh,when the nut is thrown back to its normal position, as

shown in Fig. 1, first, by means of the inclines b on the support and bupon the opposite end of the nut, the nut being actuated by the weighta, which is simply a heavy lug of cast-iron on one side of the portionA- of the nut, as shown in Figs. 1 and 2, sufiicient to carry the nut toits normal position, and, second, by the s ring E, that surrounds thebearing a on t e nut and acts at one end upon the end of the bearing 0on the supporttween the jaw D and the end of the bench-,

screw B which serve a double purpose: first, to assist the inclines C ato carry the thread upon the bench-screw and in the nut to position tomesh, and, second, to assist the screw and nut in carrying the jaw Dforward to firmly clamp any object that may be placed in it, it beingunderstood that after the jaw D has been slid to position to bear uponthe object in the vise the screw can be turned but little over one-halfway around to clamp the object firmly, and consequently if the objectshould not be of a solid nature the unassisted travel of the threadsmight not clamp it sufficiently. Hence the desirability of the auxiliarymeans as provided by the inclines ff now under discussion.

The incline b on the end of the support G is carried out in dotted linesthrough the screw B, so that it may be easily traced to show itsconnection with and action upon the incline l) on the end of the bottomA of the box or nut A A.

The bearing a at the end of the nut A A rests and revolves freely in thebearing 0 on the support G, so that the inclines I) b may be made to actwith certainty, though of course this bearing is not necessary tosupport the nut, as it is safely supported by the bench-screw B; but itis necessary when the spring E is used to prevent the spring fromgetting between the ends of the nut and sup- 3 Where the endwisemovement is imparted from the instant the box begins to revolve.

Having thus fully described our invention, what we claim as new, anddesire to secure byLetters Patent of the United States, is

1. In a quick-acting vise having a stationary and a movable j aw, abench-screw having a section cut out of the thread longitudinal of thescrew, a nut in two parts and having a section of screw-threadlongitudinal of one part, and inclines and springs for actuating the nutendwise, substantially as and for the purpose set forth.

2. In a quick-acting vise having a stationary and a movable jaw, a screwhaving a section cut from the thread longitudinal of the screw, a nut intwo parts having a section of screw-thread longitudinal of one part, andinclines, springs and weight for actuating the nut endwise,substantially as and for the purpose set forth.

3. In a quick-acting vise having a movable jaw and a stationary jaw, ascrew having a section cut out of the thread longitudinal of the screw,a divided nut having a segment of screw-thread longitudinal of one ofits parts, inclines, weights and springs for actuating the nut endwise,and auxiliary inclines on the bench-screw and on the movable vise-j aw,substantially as and for the purpose set forth.

Signed at Grand Rapids, Michigan, J anuary 3, 1904.

WILLIAM VANMANEN. STEPHEN VANMANEN. In presence of ITHIEL J. OILLEY,ANDREW ALLGIER.

